Power Brake Booster

Clean, high quality brake fluid is essential to the safe and proper operation of the brake system. You should always buy the highest quality brake fluid that is available. If the brake fluid becomes contaminated, drain and flush the system, then refill the master cylinder with new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system should be discarded. Also, do not allow any brake fluid to come in contact with a painted surface; it will damage the paint.

1996-98 Sidekick, Tracker and X-90 models equipped with the Anti-Lock Brake System (ABS) require a scan tool to properly bleed the brake system. If you are servicing such a vehicle, please refer to the applicable ABS information located at the end of this information BEFORE you perform any brake procedures.

For 1996-98 Sidekick, Tracker and X-90 models equipped with 4-wheel ABS, remove the ABS actuator from the engine compartment.

Fig. Fig. 1: Exploded view of the power brake booster mounting

CAUTION

Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with the eyes and wash your hands thoroughly after handling brake fluid. If you do get brake fluid in your eyes, flush your eyes with clean, running water for 15 minutes. If eye irritation persists, or if you have taken brake fluid internally, IMMEDIATELY seek medical assistance.

Remove the master cylinder.

Disconnect the vacuum hose from the booster.

From inside the vehicle, remove the pushrod clevis pin and cotter pin from the brake pedal arm.

Loosen the brake booster mounting nuts, then remove the brake booster from the vehicle.

Fig. Fig. 2: If another booster is going to be installed, transfer the clevis and nut from the old booster to the new one

If another booster is going to be installed, disconnect the pedal attachment (the clevis and nut) from the booster.

WARNING

Never disassemble the brake power booster, which would damage the brake booster beyond repair. If it is found to be defective, replace it with a new one.

To install:

If necessary, connect the pedal attachment to the booster.

Before installing the brake power booster, measure and, if necessary, adjust the pushrod clevis length.

Position the booster on the firewall so that the booster studs protrude through the firewall into the passenger's compartment of the vehicle.

Mount the master cylinder on the booster, then install all related components (including the ABS actuator for 1996-98 Sidekick, Tracker and X-90 models equipped with ABS).

WARNING

Clean, high quality brake fluid is essential to the safe and proper operation of the brake system. You should always buy the highest quality brake fluid that is available. If the brake fluid becomes contaminated, drain and flush the system, then refill the master cylinder with new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system should be discarded.

Before installing the brake power booster, ensure that the pushrod clevis length is correct. If the length is incorrect, the brake pedal will not properly engage the booster and master cylinder, and may possibly cause premature master cylinder or booster malfunctioning.

Remove the brake booster.

Fig. Fig. 3: The pushrod clevis length (A) can be adjusted by turning the clevis on the pushrod until the proper length is achieved

Measure the distance from the hole in the clevis to the booster-to-firewall mating surface (on the booster). This measurement is A in the accompanying illustration. The distance should be 4.94-4.98 in. (12.55-12.65cm) for Samurai models, or 4.96-5.00 in. (12.61-12.71cm) for Sidekick, Tracker, Sidekick Sport and X-90 models.

If the measurement is not within the specified range, adjust the clevis length by turning the clevis until the proper length is achieved.